-ln-a-a²+1<0
    x > 5
    sin(x) > 0.5
    (3x+2)>2 -2025=(3x+1)>2
    16<=2-3a<17
    3>abs(2m-1)>abs(m)
    20000/x+40000/(x+60)≤250
    20000/x+30000/(x+60)≤250
    3x + 5 > 2x - 3
    x^2-224 x+256<0
    (2a+1)^2-8>0 1/4-(1/2)(2a+1)+2>0 2-2(2a-1)+2>0
    (2a+1)^2-8>0 1+2a+1+2>0 1-2a-1+2>0
    (2a+1)-8>0 1+2a+1+2>0 1-2a-1+2>0
    34<(75+6.3cosx）-（84-6.3sinx）tanx
    34<(75+6.3cosx）-（36-6.3sinx）tanx
    5/2^10<(195.652/(x+195.652)-184.9171/(x+184.9171))*5
    2n-1/（2n＋1)(2n-1）+6≥2n-3/(2n－1)(2n-3)+6
    2x + 5 > 3x - 2
    (1-20x+400/3*x^2-1000*x^3+20000/3*x^4)^2 <1
    (1-10x+100/3*x^2-125*x^3+1250/3*x^4)^2 <1

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